Testing attachment for drills



July 7, 1931. WHlTE 1,813,789

TESTING ATTACHMENT FOR DRILLS Filed April 5. 1929 2 Sheets-Shee l y 1931- T. 1 WHITE 1,813,789

TESTING ATTACHMENT FOR DRILLS Filed April 5. 1929 2 Sheets-Shee 2 Patents July 7, 1931 UNITED STATES THOMAS J. WHITE, 01 FORDYCE, ARKANSAS 'rns'rmq ATTACHMENT; ron 'munns Application filed April 5, 1929. Serial No. 352,829.

This invention relates generally to well drilling apparatus and has particular relation to devices for testingthe formation within a well with a view of determining the presence of oil or gas without setting the casing.

An. object of the present invention is the provision of a device of the above character which is positive and reliable in use and may be lowered into the rat hole of a well without danger of opening the controlling valve, means being provided whereby the valve must be manually opened and closed, while in addition, means are provided for assisting in the closing operation and hold ing the valve closed, so that a positive and reliable test may be made.

Another object of the inventioiris the provision of a testing device in which all of the movable arts are enclosed to shut off sand and mu so that proper operation of the parts is assured.

Another object of the invention is the provision of means for positioning the controlling valve at the'bottom of the device, so that the valve will be positioned in the hole at the point of greatest pressure, together with means for packing the device at either end 'of the valve stem to protect the valve from sand and grit. v

Another object of the invention is the provision of means for mounting and positioning the valve so that ready inspection may be made before each operation.

With the above and other objects in view, the invention further includes the following novel features and details of construction, to be hereinafter more fully described,

u illustrated in theaccompanying drawings 40 and pointed out in the appended claims.

In the drawings Figure 1 is a vertical sectional view of a well testing device constructed in accordance with the invention.

Figure 2 is an enlarged vertical section taken through the lower part of the device.

Figure 3 is a. similar view taken through the upper part.

Figure 4 is a 50 stem.

detail elevation of the valve Figure 5 is a section on the line 6-6 of Figure 3.

Figures 6 and 7 are sections taken respect1vel2y on the lines 7-7 and 8-8 of Figure Referring to the drawings in detail wherein like characters of reference denote corresponding parts, the reference character 10 indicates a housing which is preferably cylindrical and which threadedly secured to its lower end a collar 11 having an inturned flange 12. Positioned within the casing 10 upon the flange 12 is an annulus 18 which is interiorly threaded for engagement with the upper end of a sleeve 14. The sleeve 14 extends downward from the lower end of the housing and has threadedly mounted thereon a collar 15, while positioned between this collar and the flange 12 is a tapered compressible packing collar 16. The collar 16 is 7 adapted to engage the upper edge of the rat hole in the bottom of a well so as to 'cut oil mud and water when a test is being made.

Threadedly secured to the lower end of the sleeve 14 is a hollow nose or extension 17 whose lower extremity is rounded as indicated at 18. This lower extremityis detachable from the extension 17 and is connected thereto through the medium of a plug 19 3 which is provided with a bore or chamber 20. The hollow extension or nose 17 is provided with openings 21, while openings 22 are provided in the rounded extremity 18. These 7 last mentioned openings taper upwardly and outwardly so as to prevent the entrance of sand when the device is being lowered into a I hole.

The plug 19 has its upper reduced end tapered as shown at 23 so as to provide a valve member which is adapted to engage a seat 24 provided in the lower end of a hollow valve stem 25. In addition, the plug 19 is provided with a passage 26 which is normally closed 29. This member is rotatable within the housing 10 and extends through the upper end of said housing for connection with the lower end of a drill stem (not shown). A. packing 30 provides a leakproof joint around the'tubular member 29 at the up er end of the housing.

The lower end of the tubular member 29 has threadedly secured thereto an annular member 31 which forms a base for the tubular member and which is provided with a rectangular bore 32. This bore receives a sleeve 33 whose outer configuration conforms to the configuration of the bore 32 and has a sliding non-rotatable fit within said bore. The sleeve 33 is secured to the stem 25 as in dicated at 34.

The tubular member 29 is supported within the housing 10 upon a collar 35, an anti-friction bearing 36 being interposed between this collar and the lower end or base of the tubular member. The collar 35 is provided with an annularflange 37 and rests upon the annulus 13. The annular member 29 carries upper and lower'anti-friction bearing members 38 which engage the inner walls of the housing 10 and these bearing members, together with the anti-friction bearing 16 provide for ease of rotation of the tubular member 29 within the housing.

Threadedly engaging the upper inner end of the sleeve 14 is a nut 39 which has a threaded engagement 40 with the stem 25,and as this stem has a non-rotatable sliding connection with the tubular member 29, when the said tubular member is rotated through rotation of thedrill stem, the stem 25 will be raised or lowered from or into engagement with the valve member or plug 19, according to the direction of rotation.

A packing 41 is provided around the valve stem 25 near the lower end thereof while a packing 42 surrounds said stem near the upper end of the tubular member 29.

Surrounding the tubular member 29 within the housing 10 is a collar 43. This collar has a. non-rotatable sliding connection with the housing 10 through the medium of guide bars 44 which engage the walls of notches 45 provided in the collar 43 at diametrically opposite points. rounds the tubular member 29 and has one of its ends connected to the collar 43 as shown at 47, while the opposite end of this spring is connected to the tubular member 29 as shown at 48.

The device is attached to the lower. end of the drill stem and lowered into the rat hole, the-packing collar 16 cutting ofl mud and water from the rat hole. By rotating the drill stem (and consequently the tubular member 29) in one direction, the stem 25 will be likewise rotated and by reason of its threaded connection 40'with the nut 39, this stem will move upward so that the valve mem- A coiled spring 46 sur-' ber 19 will be unseated. The contents of the hole will pass through the openings 21 into the valve stem 25 and should gas be present it will pass upward through the valve stem. Should oil be present, it will enter the valve stem and the latter may be rotated in a reverse direction to a closed position and the oil drawn to the top when the device is raised should the well not be free flowing.

Opening movement of the valve will be yieldingly resisted by the spring 46 and this spring will assist in closing the valve and holding the same in closed position, so that accidental opening of the valve will be practically impossible.

Having described the invention what is claimed is The valve 27 will be automatically opened 1. In a well testing device, a tubular mem- 7 her adapted to have one of its ends connected with the lower end of a drill stem, a hollow rotatable valve stem extending through said member and having an opening at its lower end surrounded by a'valve seat, a relatively stationary valve member positioned for engagement by said seat, and means to move the seat with respect to the valvemember when the stem is rotated.

2. In a well'testing device, a tubular member adapted to have one of its ends connected with the lower end of a drill stem, a hollow rotatable valve stem extending through said member and having an opening at its lower end surrounded by a valve seat, a relatively stationary valve member positioned for engagement by said seat, means to move the seat with respect to the valve member when the stem is rotated, and means to yieldingly resist rotation of said stem in one direction.

3. In a well testing device, a housing, a hollow perforated extension projecting from the lower end of the housing and closed at its lower end, a compressible packing at the juncture of the housing and the perforated extension, a rotatable tubular member having its lower end extending into the housing,

and its upp'er end adapted for connection with the lower end of a drill stem, a plug located within and rigid with the perforated extension and having a tapered upper end defining a valve member, a hollow longitudinally movable rotatable valve stem extending through the tubular member, means providing a sliding interlocking connection between the valve stem and the tubular member to rotate the stem whenthe. tubular mem ber is rotated, and a packing surrounding the stem adjacent each end thereof.

4. In a well testing device, a housing, a hollow perforated extension projecting from the lower end of the housing and closed at its lower end, a compressible packing at the juncture of the housing and the perforated extension, a rotatable tubular member having its lower end extending into the housing and its upper end adapted for connection with the lower endof a drill stem, a plug located within and rigid with the perforated extension and having a tapered upper end defining a valve member, a hollow longitudinally movable rotatable valve stem extending through the tubular member, means providlng a sliding interlocking connection between the valve 7 stem and the tubular member to rotate the stem when the tubular member is rotated, means to move the stem longitudinally when the tubular member is rotated, a packingsurextension and having a tapered upper end I defining a valve member, a hollow longi tudinally movable rotatable valve stem extending through the tubular member, means providing a sliding interlocking connection between the valve stem and the tubular member to rotate thestem when the tubular member is rotated, a spring arranged within the housing around the tubular member and having one of its ends secured to the tubular member and its other end secured to a relatively'stationary member and a packing sur-' rounding the stem adjacent each end thereof.

ing connection with the latter, a spring surrounding said tubular member and having one of its ends secured to said collar and its opposite end-secured to said tubular member, and a packing surrounding the stem adjacent each end thereof.

In testimony whereof I aflix my signature.

THOMAS J. WHITE.

6. In a well testing device, a housing, a.

hollow perforated extension projecting from the lower end of the housing and closed at its lower end, a compressible packing at the juncture of the housing and the perforated extension, a rotatable tubular member having its lower end extending into the housing e and its upper end adapted for connection with the lower end of a drill stem, a plug located within and rigid with the perforated extension'and having a tapered upper end defining a valve member, a hollow longitudinally movable rotatable Valve stem extending through the tubular member, means providing a sliding interlocking connection between the valve stem and the tubular member to rotate the stem when the tubular member is rotated, a

non-rotatable collar surrounding the tubular member within the housing and having a slid- 

